Veterinary surgeon&#39;s float.



Patented July I, 1902.

P. J. WEDER. VETERINARY SUBGEONS FLOAT.

(Application filed Dec. 28, 1901..)

(No Model.)

QN NW we NORRIS vzrzns co, PHOYO-LIYNO, WASHINGTON. n. c.

NITED" STATES AfrnNT FFICE.

PAUL J. WEDER, OF CHICAGO, ILLINOIS, ASSIGNOR TO SHARP & SMITH, OF

- CHICAGO, ILLINOIS, A FIRM.

VETERINARY SURGEONS FLOAT.

SPECIFICATION forming partiof Letters Patent No. 703,867, dated July 1, 1902.

Application filed December 28,1901- Serial No; 87,550. (No model.)

To all whom, it may concern.-

Be it known that I, PAUL J. VVEDER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful Improvements in Veterinary Surgeons Floats, of which the following is a specification, reference being'had to the accompanying drawwas. 1

This invention relates to improvements in veterinary surgeons instruments for filing down the teeth of horses, such style of instrument beingtechnically known as a float. Instruments of this character comprise a rasp,

a holder therefor-,arid a handle affixed to the holder. Theholder in general use consists of a heavy fiat plate having raised sides in which are formed grooves adapted to receive the side edges of therasp and of course'leaving one face of the rasp exposed. The forward end of such holders in general use is provided with an upturned piece, against which the forward end of the'rasp abuts and at its rear end is held in place by a shoulder formed on the han- 2 5 dle-bar, which isforced up against said rear end as the handle-baris screwed into place. In another form of device employing substantially the same holder a loose piece on the screw-threaded portion of the handlebar is employed to bear against the rear end of the rasp. In both these forms of construction it is evident that the rasp must bewithdrawn from the rear end of the holder only, owing to the fixed stop at the forward end of such holder,

and it is evident also that the rasp must substantially conform in length to the length "of the holder. Both forms are open to objections also in that in the first-described construction the handle-bar must be wholly disconnected from the holder in order that the rasp may be removed, and in the second-described construction the loose rasp-retaining piece referred to while turning sufliciently to allo-wof the removal of the rasp upon a mere loosening of the connection between the handle-bar and holder is apt to become lost or Inislaid when such handle-bar is entirely disconnected from the holder, which disconnection has frequentlyto be made to enable the handle bar to be secured to another holder, it being understood that one handle usually su'fficesfor two or more holders that are adapted'to be used at dilferent angles. Furthermore, a separate loose retainingpiece has to be provided for use with each of the said twoor more rasp-holders, as the retaining-piece' that will properly hold the rasp in place when the handle-bar is attached at an angle to the rasp-holder willnot answer when such handle-bar is straight or in line with the said holder, and-vice versa. This provision of extra retaining-pieces adds, of course, to the expense and also increases the liability of the instrument being rendered useless through the loss of such small pieces.

It is the object of my invention to obviate the objections above specified and to provide an instrument for the purpose stated that will securely hold or bind the rasp within its holder, that will permit the rasp to be released from its binding engagement with its holder by a slight movement of the handlebar, that will permit of'an equally firm holding or binding-of the rasp withinits holder whethersuch holder be of the construction that allows the handle-bar to be secured at an angle to it or one in which such handle-bar is secured to and in a straight-line with the holder, and this without the use of any extra or different part or parts for engaging the rasp, and that will permit of the use of a rasp of greater or less length than its holder. These objects I accomplish by the devices and combinations of devices illustrated in the drawings and hereinafter specifically 'described.

That which I regard as new will be set forth in the claims.

In the accompanying drawings, Figure 1 is a side'elevation. Fig. 2 is a plan View. Fig. 3 is a longitudinal section at line 3 3 through the rasp-holder and rasp, a portion only of the handle bar or rod being shown. Fig. 4' is a cross-section at line 4 4 of Fig. 1; and Fig. 5 is'a view similar to Fig. 3, except that 5 the holder is adapted to have thehandle bar or red attached to it at an angle.

Referring to the severalfigu res Otthejdrawings, in which corresponding parts'are indicated by the same reference characters, 6 indicates the rasp-holder, consisting of a flat plate, upon opposite sides of which are formed two vertical flanges 7, cut away on their inner faces to form grooves, as best shown in Fig. 4, into which grooves project the side edges of the rasp to be employed, such rasp being indicated by 8. The grooves are unobstructed at both ends, and the rasp can therefore be inserted or withdrawn at either end of the holder, and a rasp of greater length than the length of the holder can be employed, if desired, whereas in the floats in general use the rasp must be approximately of the same length as the holder and can only be inserted or Withdrawn from the rear end of the holder, as hereinbefore explained.

9 indicates'a thickened portion on the under face of the plate, in which is formed a screw-threaded opening 10, adapted to receive a screw-threaded shank 11 on the forward end of a handle bar or rod 12.

13 indicates a lug formed with or rigidly secured to the bar or rod 12 immediately in rear of the screw-threaded shank 12 and adapted when the said shank 12 is screwed nearly to its limit in the hole 10 to come in contact with the under surface of the rear end of the rasp 8, which rear end, as shown, is caused to project slightly beyond the end of the holder. The effect of the contact of the lug 13 is to force the rasp up tightly against the upper edges of the grooves in the vertical flanges 7, where it will be held immovable until the pressure is released by a reverse turn of the bar or rod 12. Inasmuch as both sides of the rasp are usually cross-milled or roughened it will be evident that the engagement between the parts when locked in the manner described will be an exceedingly strong one, so that there is no chance of the rasp slipping in the slightest degree when in use. The part 13 is shown as a disk secured ecventricall'y to the bar or rod 12, thus giving to it a cam action with respect to its engagement with the rasp, and this is the form that I prefer, as it is evident that if by wear one portion of the face becomes worn a new engaging portion of the face can be turned to contact with the face of the rasp. Other shapes could of course be given to this part and accomplish the same result.

In Fig. 5 I have shown the invention in connection with a holder having the handle bar or rod attached at an angle. The rear end of the holder is formed at an obtuse angle to the body portion instead of at right'angles, as in the construction shown in the other figures of the drawings; but the operation of the several parts is exactly as before described. In this construction, however, the

edge of the lug carried by the bar or rod contacts the rasp instead of the contact being by the full width of its edge, as shown in the The several parts in the conother figures.

effective device is produced possessing all the advantages of the devices for the same purpose that are now on the market and obviatin g the disadvantages hereinbefore pointed out as appertaining to such other constructions.

That which I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination with'a rasp-holder, and

a rasp mounted thereon, of means for engaging the upper surface of the rasp, a handle bar or rod rotatably secured to one end of said holder, and a device integral with said bar or rod and adapted upon the rotation thereof to contact the under face of the rasp and force it upward into binding engagement with the,

said means for engaging the upper surface of the rasp, substantially as specified.

2. The combination with a rasp-holder consisting ofa plate provided with grooved side flanges, and a rasp slidingly mounted thereon, of a handle bar or rod rotatably secured to one end of said holder and provided with an integral lug adapted to be forced against the under face of the rasp, substantially as specifled.

3. The combination with a rasp-holder consisting of a plate provided with grooved side flanges, and a rasp slidingly mounted thereon of a handle bar or rod rotatably secured to one end of said holder and provided with an integral lug" having a cam-face, said rod or bar being adapted to be moved to force said cam-face against the under face of the rasp, substantially as specified.

4. The combination with a rasp-holder consisting of a plate provided with grooved side flanges, and a rasp mounted thereon with its edges within the grooves in said flanges and its rear edge projecting beyond the rear end of the holder, said grooves being unobstructed at each end, of a handle bar or rod rotatably secured to the rear end of said holder, and a lu'g carried by said handle bar or rod and adapted upon the rotation of said bar or rod to contact the under surface of the projecting lower end of the rasp and force said rasp up into binding engagement with the upper faces of the grooves in the side flanges, substantially as specified.

PAUL J. WEDER.

WVitnesses:

JULIA M. BRISTOL, ALBERT H. ADAMS. 

